Lubricator



QNo Model.)

S. J. STEVENSON.

LUBRIGATOR.

No. 310,741. Patented Jan. 18, 1885 INVENTOR:

WITNESSES:

ATTORNEY.

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nrrnn Brn'rns Parent rrrcnl SAMUEL J. STEVENSON, OF PHILADELPHIA, PENNSYLVANIA.

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SPECIFICATION forming part of Letters Patent No. 310,741, dated January 13, 1885.

' Application filed June 21, 1384. .(X0 model.)

To all whom it may concern.-

Be it known that I, SAMUEL J. S'rnynn SON, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Improvement in Lubricators, which improvement is fully set forth in the following specification and accompanying drawing, in which the figure represents a vertical sec tion of a lubricator embodying myinvention, consisting of means for nicely regulating the flow of oil from the lubricator and concealing the adjustingscrew, and also of means for connecting the cap and limiting the opening thereof, as will be hereinafter fully set forth.

Referring to the drawing, A represents the cup of a lubricator, the same being generally known as an oil-cup, and formed of metal or other suitable material, the base being provided with a screw-neck, A, for attachment to the place of service; but other means of attachment may be employed. Within the cup at the bottom thereof is a valve, B, the same consisting of a vertical screw-stem, B, which isfitted to a tubular guide, B, the latter ris ing from the base of the cup and having at or near its bottom ports, a a, which form communication between the oil-cup and the interior of said guide, it being noticed that the guide is in communication with the exitduct b of the cup, said duct being in the base of the cup and extended through the screw-neck A. The point of the stem B is conical, and the top of the duct 12 is of similar form, constituting the seat of the valve. The head of the stem is nicked for application of a screw-driver, or may be squared or angular for application of a suitable implement, whereby the stem may be raised or lowered, as desired, and when the stem is lowered the head abuts against the top of the guide B, thus limiting the motion and preventing injury to the valve.

It will be seen that when the cup is sup plied with oil or lubricant the latter enters the ports a a and passes into the port 6, from whence it is nicely and uniformly directed to the place of service.

It is evident that by raising or lowering the valve-stem B, the quantity of oil admitted to the duct 12 may be regulated or adjusted, and thus only the desired amount thereof discharged from the lubricator. It will be noticed that the head of the screw is within the cup and the cap 0 covers the same, so that the screw is concealed, and uninformed or improper parties are prevented from altering the adjustment of the same, and consequently of the flow of the lubricant, the screw, however, being reached by the proper person by asuitable screwdriver or wrench, even if the head is covered by the lubricant. It will also be noticed that the removal of the cup from its place of location in order to have access to the regulating-valve is thus rendered unnecessary. The inner face of the bottom of the cup is rounded, whereby the oil is directed. to the ports a and. deposit of foreign matters prevented.

0 represents the cap 'or cover of the cup, the same being screwthreaded to engage with the threaded neck 0 of the cup, the exterior of the cap being grooved, as at c, where it is freely circumscribed by a band or annular yoke, D, the supporting-arm D of which is pivotedto a bracket or shelf, E, the latter projecting from the upper portion of the cup and secured to or formed therewith.

It will be seen that the cap may be readily unscrewed in order to open the cup, and screwed in position to close the same without interference of the yoke, the latter, however, holding said cap, when unscrewed, so that loss of the; same is prevented. \Vhen the cap is unscrewed it may be readily raised with the arm D and be held elevated thereby, thus leaving the cup open and free to be replenished, &c. When the cap or arm is let go, the cap drops in position on the neck 0, and may be readily tightened thereon.

In order to limit the rising motion of the arm D, and consequently of the cap, the heel of said arm or end at the axis thereof is made diagonal, as at d, so that when the arm is raised, said diagonal end abuts against the bracket E and acts as a stop, preventing further elevation of the arm, by which provision overturning of the arm and cap are prevented. A vent, e, is formed in the neck 0 for the admission of air into the cup for well-known purposes.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A lubricator having at the bottom of its cup avalve, formed of a screw-stern, and a tuvided with a closing-cap and a yoke pivoted bular guide, at top a removable cap whereby to the cup freely encircling said cap, substanaccess is had to the valve without displacetially as and for the purpose set forth. ment of the lubricator, substantially as and 4. In a lubricator, a cap or cover, in combifor the purpose set forth. nation with the pivoted arm D, having a di- 2. A lubriea'tor having at the bottom of its agonal heel, cl, substantially as and for the cup a valve, formed of a screw-stein, and a tupurpose set forth. bular guide and at top a closing cap which T is freely encircled by a yoke pivoted to the SAML' STEVELSON' cup, substantially as and for the purpose set fOIth. 3. A lubricator having a cup Which is pro- I XVitnesses:

JOHN A. WIEDERSHEIM, I. H. STEVENSON. 

